Attosecond observations of coherent electron dynamics in molecules and nanostructures can be achieved by combining conventional scanning tunneling microscopy (STM) with ultrashort femtosecond laser pulses. While experimental studies in the subcycle regime are under way, a robust strong-field theory description has remained elusive. Here we devise a model based on the strong-field approximation. Valid in all regimes, it provides a surprising analogy to the standard model of STM. We show that the intuitive three-step model of attosecond science directly emerges from our model and we also describe the optimal conditions for attosecond STM experiments. Published by the American Physical Society 2024

中文翻译：

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阿秒隧穿显微镜的强场理论


通过将传统的扫描隧道显微镜 （STM） 与超短飞秒激光脉冲相结合，可以实现分子和纳米结构中相干电子动力学的阿秒观测。虽然对子周期机制的实验研究正在进行中，但稳健的强场理论描述仍然难以捉摸。在这里，我们设计了一个基于强场近似的模型。在所有制度中都有效，它为 STM 的标准模型提供了一个令人惊讶的类比。我们表明，阿秒科学的直观三步模型直接来自我们的模型，我们还描述了阿秒 STM 实验的最佳条件。 美国物理学会 2024 年出版